Automatic control for supply-pumps.



No. 802,594 PATENTED OUT. 24, 1905 O. PPLASTERBPB.

AUTOMATIC CONTROL FOR SUPPLY PUMPS.

APPLICATION PILBD JAN. 14. 1905.

ANDREW. n Gwuu co, Mmmumoemmina wAsumm'ou. n c.

SIES PAENT OFFIOE.

Specification of Letters Patent.

Patented Oct. 24. 1905.

Application filed January 14, 1905. Serial No. 24:1,1O L.

To all. whom it may concern.-

Be it known that I, OHARLus PFLAS'IERER, a citizen of the United States, residing at Valmeyer, in the county of Monroe and State of Illinois, have invented certain new and. useful Improvements in Feedater Regulators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention, as will be hereinafter clearly set forth, relates to automatic means for the control of a pump connected with the boiler of a steam-engine or the like, whereby the pump will be automatically started whenever the water in the boiler becomes unduly reduced in quantity or lowered beyond a safe point; and my invention consists of certain details of combination and construction of parts, the preferred form whereof will behereinafter set forth, and pointed outin the claims.

My object, among others, is to provide an absolutely reliable and efficient control for the pump, so that the pump will be started automatically in the performance of its work of forcing water into the boiler at the instant when the water shall have become unduly lowered beyond a predetermined safety-point.

Other objects and advantages will be hereinafter made clearly apparent, reference being had to the accompanying drawings, which are made a part of this application, and in which Figure 1 shows my invention as applied to use upon a boiler of the usual or any preferred construction. Fig. 2 is a detail view showing the cylinder employed by me in carrying out my invention. Fig. 8 is a detail view showing the piston or movable valve designed to open and close the steam-pipe leading to and designed for the control of the pump. Fig. 4; is a perspective view of the preferred form of packing-ring which I employ in connection with the piston or valve shown in Fig. 3.

The various parts of my invention and cooperating accessories will be specifically designated by reference-numerals, the same numeral applying to a similar part throughout the several views, and, referring to the numerals on the drawings, 1 indicates a boiler of the usual or any preferred construction, 2 inclicating the lines, also of the usual character, and cooperating with the boiler is my vertically-disposed cylinder 3, connected to the lower portion of the boiler by a suitable pipe 4 and to the upper portion of the boiler by an additional pipe 5, and itis obvious that the water will therefore rise to the same height in the cylinder 3 that it occupies in the boiler and which is clearly shown in Fig. 1, and I utilize this position of the water in the cylinder to operate the piston, which I have pro vided to cooperate with the cylinder and which is preferably made in the mannerillustrated in Fig. 3, though any preferred form of piston may be adopted, as will be obvious.

In the present instance it will be observed that the piston consists of the body portion or member 6, having at each end a head-like terminal 7, said heads preferably having three flanges 8, whereby a pair of seats at each end is provided for the reception of a packingring 9. (Illustrated in detail in Fig. 4.)

It will of course be understood that in some instances only one packing-ring may be employed, though I reserve the right to use any number of rings deemed most suitable to accomplish the result of separating the water and the steam. It will also be observed that near the upper end of the cylinder 3 I have provided a pipe connection 10, preferably having a suitable valve 11 of any desired character, and have also provided an additional pipe connection 12, similarly provided with a suitable valve 13, and that both of the pipes 10 and 12 are connected to the steampipe 14:, leading to the pump (not shown) by means of the union 15. When, therefore, the water becomes unduly and unsafely lowered, the steam-pressure will force the valve downward and incidentally open the pipe 10 into communication with the pipe 14: and start the pump upon its work of supplying water to the boiler, and when the pump shall have operated. sufficiently long to fill the boiler to the desired point the piston will have. been raised by the action of the water sufliciently to close the opening in the pipe 10, and thereby cut off further supply of steam to the pump, and as a consequence stop further action thereof. Obviously this operation will be repeated each time the water in the boiler is unduly lowered to an unsafe point, the pump being automatically started at the opportune moment to provide an additional supply of water, and when such supply shall have been provided the pump will instantly cease further action.

The various parts of my invention may be cheaply and expeditiously manufactured and each assembled in its respective operative position, and while I have described the preferred combination and CODStI'UCtiOILOf parts I desire to comprehend in this application all such substantial equivalents and substitutes as may be considered as fairly falling within the scope and purview of my invention.

Believing that the construction,advantages, and manner of using my invention have thus been made clearly apparent, further description is deemed unnecessary.

'hat I claim as new, and desire to secure by Letters Patent, is

1. A feed-Water regulator comprising a cylinder having a Water-inlet at one end, a steaminlet at its other end and a steam-outlet, a stem Within the cylinder, a non-buoyant piston at each end of the stem and fitting snugly Within the cylinder, said pistons and stem being operated by the pressure of steam and Water Within the cylinder and adapted to open or close communication between said steaminlet and the steam-outlet.

2. The combination with a boiler; of a feed Water regulator comprising a cylinder extending above and below the water-line in the boiler, means for conducting Water and steam from the boiler to the bottom and top of the cylinder respectively, said cylinder having a steam outlet, non buoyant pistons fitting snugly and adapted to reciprocate Within the cylinder, and a stem connecting the pistons and holding them in fixed relation, said pistons and stem being operated by the Water and steam pressure Within the cylinder to close and open communication between said steaminlet and the steam-outlet respectively.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

CHARLES PFLASTERER.

IVitnesses:

GEORGE MUELLER, RoY E. GAUEN. 

